[dpdk-dev] [RFC 4/6] net/virtio: revert the changes in 18dc1b1ac
Tiwei Bie
tiwei.bie at intel.com
Tue Jul 18 17:40:19 CEST 2017
Revert the changes in 18dc1b1ac, because we want to test the
performance similar to the real world case.
Signed-off-by: Tiwei Bie <tiwei.bie at intel.com>
---
drivers/net/virtio/virtio_rxtx.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 3983626..7be9aae 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -139,9 +139,7 @@ virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts,
}
rte_prefetch0(cookie);
-#if 0
rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *));
-#endif
rx_pkts[i] = cookie;
vq->vq_used_cons_idx++;
vq_ring_free_chain(vq, desc_idx);
@@ -512,9 +510,7 @@ static void
virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf)
{
uint32_t s = mbuf->pkt_len;
-#if 0
struct ether_addr *ea;
-#endif
if (s == 64) {
stats->size_bins[1]++;
@@ -533,7 +529,6 @@ virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf)
stats->size_bins[7]++;
}
-#if 0
ea = rte_pktmbuf_mtod(mbuf, struct ether_addr *);
if (is_multicast_ether_addr(ea)) {
if (is_broadcast_ether_addr(ea))
@@ -541,7 +536,6 @@ virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf)
else
stats->multicast++;
}
-#endif
}
/* Optionally fill offload information in structure */
@@ -664,6 +658,9 @@ virtio_recv_pkts_1_1(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts
dxp = &vq->vq_descx[used_idx & (vq->vq_nentries - 1)];
+ rte_packet_prefetch(rte_pktmbuf_mtod(
+ (struct rte_mbuf *)dxp->cookie, void *));
+
len = desc->len;
rxm = dxp->cookie;
dxp->cookie = nmb;
--
2.7.4
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